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https://www.nist.gov/people/randall-p-wagner
Randall P Wagner ()
Mr. Wagner is a physicist in the in the Mass and Force Group in the Quantum Measurement Division of the Physical Measurement Laboratory (PML) at the National Institute of Standards and Technology (NIST).
Akobuije Chijioke, Richard A. Allen, Steven E. Fick, David Long, Benjamin Reschovsky, Jared Strait, Randall P. Wagner
We propose an optical sound standard in which the sound pressure is directly measured by using an optical cavity to observe the induced change in the refractive
Joshua Alexander, Stephanie Trippel, Randall Wagner, Steve Armstrong
Hearing aids are commonly fit with ear canals partially or fully open—a condition that increases the risk of acoustic feedback. Feedback limits the audiometric
A precision laser-based comparison calibration method for laboratory standard microphones is described that uses reference microphones calibrated by the
Richard A. Allen
,
Randall P Wagner
,
Benjamin Reschovsky
and
Akobuije Chijioke
A sound pressure metrology instrument determines sound pressure from index of refraction and includes: a light source that produces source light; the optical cavity that: receives an acoustic field from the sound source; receives the source light from the light source; produces acoustic-modified
An interferometric microphone calibrator for comparison calibrating a microphone, the interferometric microphone calibrator comprising: an interferometer in optical communication with a microphone and that produces an interferometer measurement light, communicates the interferometer measurement